列挙型メンバー
NONE
NONE:0
RAW
RAW:1
VOICE_COMMUNICATION
VOICE_COMMUNICATION:2
WAKEWORD
WAKEWORD:3
CAMCORDER
CAMCORDER:4
VOICE_RECOGNITION
VOICE_RECOGNITION:5
ULTRASOUND
ULTRASOUND:6
TAP_DETECTION
TAP_DETECTION:7
BLUETOOTH_A2DP
BLUETOOTH_A2DP:8
BLUETOOTH_SCO
BLUETOOTH_SCO:9
